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标题：Phase Relations in <svg style="vertical-align:-4.49641pt;width:183.9875px;" id="M1" height="20.85" version="1.1" viewBox="0 0 183.9875 20.85" width="183.9875" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(.022,-0,0,-.022,.062,15.188)"><path id="x42" d="M372 352v-2q176 -27 176 -159q0 -99 -95 -151q-73 -40 -196 -40h-221v28q65 5 78.5 19t13.5 76v404q0 63 -12 77t-72 18v28h257q102 0 150 -34q26 -18 41 -48.5t15 -65.5q0 -111 -135 -150zM213 362h47q80 0 117.5 32t37.5 96q0 56 -33 92t-100 36q-41 0 -56 -10
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作者：Amanda L. Snashall ; Yun Liu ; Frank Brink 等
期刊名称：Advances in Condensed Matter Physics
印刷版ISSN：1687-8108
电子版ISSN：1687-8124
出版年度：2013
卷号：2013
DOI：10.1155/2013/373079
出版社：Hindawi Publishing Corporation
摘要：A careful, systematic investigation of (BLnTss) ceramics has been performed in order to understand the relationship between composition, microstructure evolution, and microwave dielectric properties. In this paper, we report the effects of composition, morphology, and sintering time on the phase relations and properties of BLnTss (Ln = Nd, Nd/Sm, Sm) ceramics. The microwave dielectric properties of the materials are reported in addition to phase characterisation and structural analysis via X-ray diffraction and field emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. BLnTss, , ceramics with high Sm content are found to experience a severe degradation of Qf and changes in trending, associated with the onset of globular and needle-like grain morphology and a Ba-Ti rich phase. ceramics with high Nd content are found to exhibit a secondary phase (Nd2Ti2O7) upon prolonged sintering which resulted in beneficial changes to Qf and without affecting . Two BLnTss ceramics compositions with near-zero were successfully synthesised with high Qf and values.